Talk:Spatial frequency

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I think a picture would be helpful to describe what spatial frequency means in relation to images.

[edit] Conflicting nomenclature: 'wave number'

This article uses the term 'spatial frequency' to designate the quantity 1/λ and the term 'wave number' to designate 2π/λ. According to the article on wavenumber it should be 'wave number' for the former quantity and 'angular wave number' for the latter. If different sources use different naming, the article should point out this fact. It is also worth considering merging this article with the 'wavenumber' article as they both discuss the same physical quantities. 86.142.26.201 19:01, 7 May 2007 (UTC)